What two benefits can be derived from having multiple utility servers?

What two benefits can be derived from having multiple utility servers?

A.
A second utility server is only needed if HA is turned on. In that case, it can provide
a backup in case the main utility server dies

B.
A second utility server can provide a backup in case the main utility server dies.

C.
Only one utility server is allowed per server pool.

D.
A second utility server can be configured to switch to a Server Pool Master role if
no more ServerPool Masters are available.

E.
A second utility server can help load balance high I/O loads.